package com.sincon.core.web.service;
import com.alibaba.fastjson2.JSONObject;
import com.sincon.common.core.domain.entity.SysUser;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import javax.servlet.http.HttpServletRequest;

import com.sincon.system.mapper.SysUserMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import com.sincon.common.constant.CacheConstants;
import com.sincon.common.constant.Constants;
import com.sincon.common.core.domain.model.LoginUser;
import com.sincon.common.core.redis.RedisCache;
import com.sincon.common.utils.ServletUtils;
import com.sincon.common.utils.StringUtils;
import com.sincon.common.utils.ip.AddressUtils;
import com.sincon.common.utils.ip.IpUtils;
import com.sincon.common.utils.uuid.IdUtils;
import eu.bitwalker.useragentutils.UserAgent;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;

/**
 * token验证处理
 *
 * @author LaoGao
 */
@Component
public class TokenService
{
    private static final Logger log = LoggerFactory.getLogger(TokenService.class);

    // 令牌自定义标识
    @Value("${token.header}")
    private String header;

    // 令牌秘钥
    @Value("${token.secret}")
    private String secret;

    // 令牌有效期（默认30分钟）
    @Value("${token.expireTime}")
    private int expireTime;

    @Autowired
    private SysPermissionService permissionService;

    protected static final long MILLIS_SECOND = 1000;

    protected static final long MILLIS_MINUTE = 60 * MILLIS_SECOND;

    private static final Long MILLIS_MINUTE_TEN = 20 * 60 * 1000L;

    @Autowired
    private RedisCache redisCache;

    @Autowired
    SysUserMapper sysUserMapper;

    /**
     * 获取用户身份信息
     *
     * @return 用户信息
     */
    public LoginUser getLoginUser(HttpServletRequest request)
    {
        // 获取请求携带的令牌
        String token = getToken(request);
        if (token==null){
            return null;
        }
        if (StringUtils.isNotEmpty(token))
        {
            try
            {
                Claims claims = parseToken(token);
                // 解析对应的权限以及用户信息
                String uuid = (String) claims.get(Constants.LOGIN_USER_KEY);
                String userKey = getTokenKey(uuid);

                JSONObject user = null;
                String str = null;
                try {
                    user = JSONObject.from(redisCache.getCacheObject("login_tokens:" + userKey));
                        if(user.getString("mid") == null){
                            str = user.getJSONObject("data").getString("mid");

                        }
                } catch (Exception e) {
                    JSONObject user2 = JSONObject.from(redisCache.getCacheObject(userKey));;
                    String string = user2.getJSONObject("data").getString("mid");
                    user = user2;
                    str = string;
                }
                LoginUser res = new LoginUser();
                res.setMid(str);
                SysUser sysUser = sysUserMapper.selectUserByBilibiliMid(str);
                res.setData(user);
                res.setLoginTime(new Date().getTime());
                res.setLoginLocation(sysUser.getLoginIp());
                res.setUserId(sysUser.getUserId());
                res.setDeptId(sysUser.getDeptId());
                res.setUser(sysUser);
                res.setToken(userKey);
                res.setPermissions(permissionService.getMenuPermission(sysUser));
                    if (user.getJSONObject("data") == null) {
                        res.setData(user);
                    }
                res.setLoginTime(new Date().getTime());

                return res;
            }
            catch (Exception e)
            {
                log.error("获取用户信息异常'{}'", e.getMessage());
            }
        }
        return null;
    }

    /**
     * 获取明文
     * @param request
     * @return
     */
    public Claims getData(String request)
    {
        Claims claims = parseToken(request);
        return claims;
    }

    /**
     * 设置用户身份信息
     */
    public void setLoginUser(LoginUser loginUser)
    {
        if (StringUtils.isNotNull(loginUser) && StringUtils.isNotEmpty(loginUser.getToken()))
        {
            refreshToken(loginUser);
        }
    }

    /**
     * 删除用户身份信息
     */
    public void delLoginUser(String token)
    {
        if (StringUtils.isNotEmpty(token))
        {
            String userKey = getTokenKey(token);
            redisCache.deleteObject(userKey);
        }
    }

    /**
     * 创建令牌
     *
     * @param loginUser 用户信息
     * @return 令牌
     */
    public String createToken(LoginUser loginUser)
    {
        String token = IdUtils.fastUUID();
        loginUser.setToken(token);
        setUserAgent(loginUser);
        refreshToken(loginUser);

        Map<String, Object> claims = new HashMap<>();
        claims.put(Constants.LOGIN_USER_KEY, token);
        return createToken(claims);
    }

    /**
     * 验证令牌有效期，相差不足20分钟，自动刷新缓存
     *
     * @param loginUser
     * @return 令牌
     */
    public void verifyToken(LoginUser loginUser)
    {
        refreshTokenBilibili(loginUser.getToken(),loginUser.getData());
    }

    public void refreshTokenBilibili(String token, JSONObject userInfo)
    {
        // 根据uuid将loginUser缓存
        String userKey = getTokenKey(token);
        /**
         * 通过UserId查询BlibiliId存储
         */
        try {
            userInfo.getString("mid");
        } catch (Exception e) {
            SysUser sysUser = sysUserMapper.selectUserById(userInfo.getLong("userId"));
            userInfo.put("mid",sysUser.getBilibiliMid());
        }


        redisCache.setCacheObject(userKey, userInfo, expireTime, TimeUnit.MINUTES);
    }


    /**
     * 刷新令牌有效期
     *
     * @param loginUser 登录信息
     */
    public void refreshToken(LoginUser loginUser)
    {
        loginUser.setLoginTime(System.currentTimeMillis());
        loginUser.setExpireTime(loginUser.getLoginTime() + expireTime * MILLIS_MINUTE);
        // 根据uuid将loginUser缓存
        String userKey = getTokenKey(loginUser.getToken());
        redisCache.setCacheObject(userKey, loginUser, expireTime, TimeUnit.MINUTES);
    }

    /**
     * 设置用户代理信息
     *
     * @param loginUser 登录信息
     */
    public void setUserAgent(LoginUser loginUser)
    {
        UserAgent userAgent = UserAgent.parseUserAgentString(ServletUtils.getRequest().getHeader("User-Agent"));
        String ip = IpUtils.getIpAddr();
        loginUser.setIpaddr(ip);
        loginUser.setLoginLocation(AddressUtils.getRealAddressByIP(ip));
        loginUser.setBrowser(userAgent.getBrowser().getName());
        loginUser.setOs(userAgent.getOperatingSystem().getName());
    }

    /**
     * 从数据声明生成令牌
     *
     * @param claims 数据声明
     * @return 令牌
     */
    private String createToken(Map<String, Object> claims)
    {
        String token = Jwts.builder()
                .setClaims(claims)
                .signWith(SignatureAlgorithm.HS512, secret).compact();
        return token;
    }

    /**
     * 从令牌中获取数据声明
     *
     * @param token 令牌
     * @return 数据声明
     */
    private Claims parseToken(String token)
    {
        return Jwts.parser()
                .setSigningKey(secret)
                .parseClaimsJws(token)
                .getBody();
    }

    /**
     * 从令牌中获取用户名
     *
     * @param token 令牌
     * @return 用户名
     */
    public String getUsernameFromToken(String token)
    {
        Claims claims = parseToken(token);
        return claims.getSubject();
    }

    /**
     * 获取请求token
     *
     * @param request
     * @return token
     */
    private String getToken(HttpServletRequest request)
    {
        String token = request.getHeader(header);
        if (StringUtils.isNotEmpty(token) && token.startsWith(Constants.TOKEN_PREFIX))
        {
            token = token.replace(Constants.TOKEN_PREFIX, "");
        }
        return token;
    }

    private String getTokenKey(String uuid)
    {
        return CacheConstants.LOGIN_TOKEN_KEY + uuid;
    }

    public LoginUser getLoginUserBilibili(String userKey) {


        JSONObject user = null;
        String str = null;
        try {
            user = JSONObject.from(redisCache.getCacheObject("login_tokens:" + userKey));
            if(user.getString("mid") == null){
                str = user.getJSONObject("data").getString("mid");

            }
        } catch (Exception e) {
            JSONObject user2 = JSONObject.from(redisCache.getCacheObject(userKey));;
            String string = user2.getJSONObject("data").getString("mid");
            user = user2;
            str = string;
        }
        LoginUser res = new LoginUser();
        res.setMid(str);
        SysUser sysUser = sysUserMapper.selectUserByBilibiliMid(str);
        res.setData(user);
        res.setLoginTime(new Date().getTime());
        res.setLoginLocation(sysUser.getLoginIp());
        res.setUserId(sysUser.getUserId());
        res.setDeptId(sysUser.getDeptId());
        res.setUser(sysUser);
        res.setToken(userKey);
        res.setPermissions(permissionService.getMenuPermission(sysUser));
        if (user.getJSONObject("data") == null) {
            res.setData(user);
        }
        res.setLoginTime(new Date().getTime());

        return res;

    }
}
